MUMBAI: Amid a strong stocks rally, the combined market capitalisation (m-cap) of the country's top-10 firms advanced by Rs 1,25,991 crore last week, with software giant TCS surpassing energy major ONGC to become the second most valuable company.

With m-cap of Rs 2,30,071 crore as on Friday's close on the BSE, TCS toppled state-owned ONGC, which had a market value of Rs 2,29,329 crore. TCS saw the maximum addition of Rs 22,029 crore to its market value during the week. ONGC added Rs 13,859 crore.

In a market that saw the BSE 30-share index, Sensex, gain over 7 per cent during the week, RIL remained the most-valued company in the country. Its m-cap swelled by Rs 18,598 crore to Rs 2,65,483 crore.

CIL was at the fourth place, followed by ITC, Infosys, Bharti, NTPC, SBI and HDFC Bank.